Hello DocCovington,
If one opens a support ticket the response is sent by email.
Support sent you another email 04/08/18.
As far as I know this was the information provided.
"To view more information about the protection enabled by Immunization, please open detailed view of Immunization. Usually there are 4 rows for a Firefox user profile. Description of immunised items are in brackets: Cookies, Images, Installations, Popups.
Immunization entries are stored in the permissions.sqlite database of Mozilla Firefox. This database uses one table. It contains permission values for installing add-ons, cookies, pop-up and images. Usually value 1 is for allow item, 2 is for blocking the item and 8 allows an item for the session only.
To check the items and values of a permissions.sqlite database a user needs a forensic tool or a sqlite viewer.
If you would like to view the permissions.sqlite file, you can use a tool developed by Safer-Networking called FileAlzyer, which can be downloaded using the link below"
https://www.safer-networking.org/products/filealyzer/
Best regards.